Hello,
On Mon, Sep 10, 2012 at 05:22:31PM -0700, Kent Overstreet wrote:
This is part of the immutable bvec prep work; bio_for_each_segment() is
going to have a different implementation so these need to be split
apart.
This change is also to better document the intent of code that's using
it - bio_for_each_segment_all() is only legal to use for code that owns
the bio.
How about something like following?
__bio_for_each_segment() iterates bvecs from the specified index
instead of bio->bv_idx. Currently, the only usage is to walk all the
bvecs after the bio has been advanced by specifying 0 index.
To help immutable bvec implementation, replace it with
bio_for_each_segment_all() which also better documents the intent of
code that's using it. Note that bio_for_each_segment_all() should
only be used by the code which owns the bio.
--
tejun